NYC-WTC_000182790

NYC 9/11 Public Portal Document

Pace Analytical Services, Inc. 1700 Elm Street - Suite 200 Minneapolis, MN 55414

iceAnaIvticar_________ Method 8290 Blank Analysis Results Tel; 612-607-1700 Fax: 612- 607-64^4

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Lab Sample ID BLANK-1336 Matrix WIPE Filename V11121E Dilution NA Total Amount Extracted 1 Sample Extracted 11/19/2001 ICAL Date 07/23/2001 Analyzed 11/21/2001 13:17 CCal Fiiename(s) V11121A&V11121I Injected By MCH

Native Cone EWIPC LRL Internal ng's Percent Isomers ng/S ng/S ng/S Standards Added Recovery 2,3,7,8-TCDF ND 0.0054 A 2,3,7,8-TCDF-l3C 2.00 59 Total TCDF ND 0.0020 2.3,7,8-TCDD-13C 2.00 61 1,2,3,7,8-PeCDF-13C 2.00 58 2,3,7,8-TCDD ND 0.0075 A 2,3,4,7.8-PeCDF-13C 2.00 55 Total TCDD ND 0.0020 1,2,3,7,8-PeCDD-13C 2.00 55 1,2,3,4,7,8-HxCDF-13C 2.00 90 1,2,3.7,8-PeCDF ND 0.0100 1,2,3,6,7.8-HxCDF-13C 2.00 82 2,3,4,7,8-PeCDF ND 0.0100 2.3,4,6,7,8-HxCDF-13C 2.00 85 Total PeCDF ND 0.0100 1.2,3,7,8,9-HxCDF-13C 2.00 76 1,2,3,4,7,8-HxCDD-13C 2.00 89 1.2.3.7.8-PeCDD ND 0,0120 A 1.2,3,6,7,8-HxCDD-13C 2.00 74 Total PeCDD ND 0.0100 1,2,3,4,6,7,8-HpCDF-13C 2.00 82 1,2,3,4,7,8,9-HpCDF-13C 2.00 75 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpCDD-13C 2.00 78 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 76 2,3,4,6,7,8-HxCDF ND 0.0100 1,2,3,7,a,9-HxCDF ND 0.0100 1,2,3.4-TCDD-13C 2.00 NA Total HxCDF ND 0.0100 1,2,3,7,a,9-HxCDD-13C 2.00 NA

1,2,3.4,7,8-HxCDD ND 0.0100 2.3,7.8-TCDD-37CI4 0.20 59 1,2,3,6,7,8-HxCDD ND 0.0100 1,2.3,7,8,9-HxCDD ND 0.0100 Total HxCDD ND 0.0100

'1,2,3,4,6,7,8-HpCDF ND 0.0100 Total 2.3,7.8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0.0100 A Equivalence; 0.00048 ng/S Total HpCDF ND 0.0100 (Using ITE Factors) '

to- 1,2,3,4,6,7,8-HpCDD 0.027 0.0100 J Total HpCDD 0.027 0.0100 J

OCDF 0.037 0.0200 I OCDD 0.220 —- 0.0200

Cone = Concentration (Totals include 2,3,7,8-substituted isomers). I = interference EMPC = Estimated Maximum Possible Concentration E = PCDE Interference LRL = Lower Reporting Limit ND = Not Detected J = Concentration detected is below the calibration range NA = Not Applicable P = Recovery outside of target range NC = Not Calculated A = Detection Limit based on signal-to-noise measurement * = See Discussion

Report No.... 01-1051099

REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.

CITY_21MC100_003101503

NYC-WTC_000182807